IS IT TRUE ? The Shadow proves the Sunshine?

Switchfoot has a song from the album "Nothing Is Sound" which goes like this-

" We are crooked souls trying to stay up straight,
Dry eyes in the pouring rain where
The shadow proves the sunshine
The shadow proves the sunshine

Two scared little runaways
Hold fast till the break of daylight where
The shadow proves the sunshine... "

and so on.

Could it be true?
Assuming that Switchfoot was talking of pain,suffering and trouble as Shadow,and the end of that suffering and finally finding hope in God as Sunshine,
could this be true?
Can the beginning,being and end of suffering point us towards God?

Can the sudden pain inflicted by life,be something more than my darkest night?
Can it be something that will be used in my life,at the very least,as a wound that would make me (hopefully!) wiser?

But it makes sense when put that way. The Shadow proves the Sunshine.
Even when the sunshine was out there all the time, we only recognise what warmth and light was upon us only after the shadow comes along.

What if my car skids on the frozen road,one moonless night,and crashes through the barrier into the cold,chilling river?
Will i curse God and die, even if i was the one who was over-speeding and not Him?
Will i remember that my brakes were faulty? Or will i still blame the ice?
Will i ever know that the cold waters had extinguished the spark of flame,right next to the car's gas tank?

What if the driver sinks with the car and dies one of the worst deaths possible?

Will the Shadow prove the Sunshine then?

We can only hope to God it will;to someone.
somewhere.
sometime.